Defects and voids in He + -implanted Si studied by slow-positron annihilation and transmission electron microscopy

1998 ◽  
Vol 66 (5) ◽  
pp. 521-525 ◽  
Author(s):  
M. Zhang ◽  
R. Scholz ◽  
H. Weng ◽  
C. Lin
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Positron Annihilation ◽  
Slow Positron ◽  
Transmission Electron

scholarly journals Structure of Rapidly Solidified Al-Fe-Cr-Ce Alloy

2011 ◽  
Vol 465 ◽  
pp. 199-202 ◽  
Author(s):  
Alena Michalcová ◽  
Dalibor Vojtěch ◽  
Pavel Novák ◽  
Ivan Procházka ◽  
Jakub Čížek ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Transmission Electron Microscopy ◽  
Positron Annihilation ◽  
Melt Spinning ◽  
Positron Annihilation Spectroscopy ◽  
Transmission Electron ◽  
Rapidly Solidified ◽  
Thermal Stability Of

An alloy containing Al – 3wt.% Cr – 3wt.% Fe – 0.8wt. % Ce, was prepared by melt spinning. Structure of obtained ribbons was observed by light, scanning and transmission electron microscopy. It was found out that the structure is very fine. Microhardness of cross sectioned ribbons was also measured. Defects in structure were determined by positron annihilation spectroscopy. The thermal stability of the alloy was observed by comparing rapidly solidified ribbons and ribbons annealed at 400°C and at 500°C for 100 h

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